Appendix A Rs-232C Serial Interface (Option) - Olivetti PG L22 Special Service Manual

APPENDIX A RS-232C SERIAL INTERFACE (option)
1) Connector
• Printer side
• Cable side
Note: Plug shall be fixable with a lock screw.
2) Cable
• Cable length :
Note: Cable is not provided.
3) Interface signal
Pin No.
1
2
3
4
5
6
7
9
17
18
19
20
21
25
• Connector pin arrangement
When the Ready/Busy protocol is used for the buffer busy control method, the busy signal can be
set to Pin-20 (DTR) in the menu.
Y103920-3
: 25-pin receptacle
Type DB-25S (made by Canon) or equivalent
: 25-pin plug
Type DB-25S (made by Canon)
Shell
Type DB-C8-J10-F2-1 (made by Nihon Kouku Denshi) or equivalent
6 ft (1.8 m) max. (cable shall be shielded)
Signal name Abbreviation Signal direction
Frame Ground FG
Transmitted Data TD
Received Data RD
Request to Send RTS
-
-
Signal Ground SG
-
-
-
Data Terminal Ready DTR
-
13
25
(View from the cable side)
Service Manual
Functions
Frame Ground
PR Transmitted Data
PR Received Data
PR Stay space level
(Not connected)
(Not connected)
Signal Ground
(Not connected)
(Not connected)
(Not connected)
PR Data terminal ready
(Not connected)
1
14
91